[PATCH v3 1/2] ufs: add a quirk not to use default unipro timeout values

[Kiwoong Kim <kwmad.kim@xxxxxxxxxxx>]

Unipro specification says attribute IDs of the following
thing are vendor-specific values, so some SoCs could have
no regions at the defined addresses
- DME_LocalFC0ProtectionTimeOutVal
- DME_LocalTC0ReplayTimeOutVal
- DME_LocalAFC0ReqTimeOutVal

The following things should be set considering the compatibility
between host and device, so those values must not be fixed and
you could use reset values or vendor specific values
- PA_PWRMODEUSERDATA0
- PA_PWRMODEUSERDATA1
- PA_PWRMODEUSERDATA2
- PA_PWRMODEUSERDATA3
- PA_PWRMODEUSERDATA4
- PA_PWRMODEUSERDATA5

Signed-off-by: Kiwoong Kim <kwmad.kim@xxxxxxxxxxx>
---
 drivers/scsi/ufs/ufshcd.c | 40 +++++++++++++++++++++-------------------
 drivers/scsi/ufs/ufshcd.h |  6 ++++++
 2 files changed, 27 insertions(+), 19 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 92d433d..9d3a41d 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -4153,25 +4153,27 @@ static int ufshcd_change_power_mode(struct ufs_hba *hba,
 		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HSSERIES),
 						pwr_mode->hs_rate);
 
-	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA0),
-			DL_FC0ProtectionTimeOutVal_Default);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA1),
-			DL_TC0ReplayTimeOutVal_Default);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA2),
-			DL_AFC0ReqTimeOutVal_Default);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA3),
-			DL_FC1ProtectionTimeOutVal_Default);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA4),
-			DL_TC1ReplayTimeOutVal_Default);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA5),
-			DL_AFC1ReqTimeOutVal_Default);
-
-	ufshcd_dme_set(hba, UIC_ARG_MIB(DME_LocalFC0ProtectionTimeOutVal),
-			DL_FC0ProtectionTimeOutVal_Default);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(DME_LocalTC0ReplayTimeOutVal),
-			DL_TC0ReplayTimeOutVal_Default);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(DME_LocalAFC0ReqTimeOutVal),
-			DL_AFC0ReqTimeOutVal_Default);
+	if (!(hba->quirks & UFSHCD_QUIRK_SKIP_DEF_UNIPRO_TIMEOUT_SETTING)) {
+		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA0),
+				DL_FC0ProtectionTimeOutVal_Default);
+		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA1),
+				DL_TC0ReplayTimeOutVal_Default);
+		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA2),
+				DL_AFC0ReqTimeOutVal_Default);
+		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA3),
+				DL_FC1ProtectionTimeOutVal_Default);
+		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA4),
+				DL_TC1ReplayTimeOutVal_Default);
+		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA5),
+				DL_AFC1ReqTimeOutVal_Default);
+
+		ufshcd_dme_set(hba, UIC_ARG_MIB(DME_LocalFC0ProtectionTimeOutVal),
+				DL_FC0ProtectionTimeOutVal_Default);
+		ufshcd_dme_set(hba, UIC_ARG_MIB(DME_LocalTC0ReplayTimeOutVal),
+				DL_TC0ReplayTimeOutVal_Default);
+		ufshcd_dme_set(hba, UIC_ARG_MIB(DME_LocalAFC0ReqTimeOutVal),
+				DL_AFC0ReqTimeOutVal_Default);
+	}
 
 	ret = ufshcd_uic_change_pwr_mode(hba, pwr_mode->pwr_rx << 4
 			| pwr_mode->pwr_tx);
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 61344c4..f36f73c8 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -549,6 +549,12 @@ enum ufshcd_quirks {
 	 */
 	UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL		= 1 << 12,
 
+	/*
+	 * This quirk needs to disable unipro timeout values
+	 * before power mode change
+	 */
+	UFSHCD_QUIRK_SKIP_DEF_UNIPRO_TIMEOUT_SETTING = 1 << 13,
+
 };
 
 enum ufshcd_caps {
-- 
2.7.4